MGMT and memory impairment: Feature selection identified the 15 strongest predictive features prior to training.<h4>Results</h4>Sex (p = 0.0037), overall survival (p = 0.0003), MGMT promoter methylation status (p = 0.0064), presentation of weakness (p = 0.0037), and presentation of memory impairment (p = 0.045) were significantly associated with PFS.